baber/WOPTO huggingface dataset:
Patent GB-954968-A (GB)
Title: Stretching machine for thermoplastic films
IPC: B29C55/16
Filed: 1962-07-20
Abstract: 954,968. Film-stretching apparatus. LINDAUER DORNIER G.m.b.H. July 20, 1962 [Sept. 1, 1961], No. 27977/62. Heading B5B. Apparatus for stretching thermoplastic film simultaneously in longitudinal and transverse directions comprises a number of stretching rollers, arranged one behind the other in the stretching zone, and driven at peripheral speeds which increase from roller to roller in the direction of movement of the film. The rollers may be of known Mycock type, and arranged in series of upper and lower stretching rollers, such that the film is stretched biaxially in successive small increments. The rollers may be of equal diameter, rotated at different speeds, or may be of increasing diameters, rotated at the same speed. In one embodiment (Fig. 2) a web 1 is wound from drum 2 and passes via roller 3 to the stretching zone 5 where it is biaxially stretched by upper and lower series 7 and 6, respectively, of curved Mycock rollers. The web is looped alternately over and under the rollers (Fig. 5), the degree of looping being variable by adjustment of the height of rollers 7, individually or together. The stretched web is wound up at 10. Both series 6 and 7 of the rollers may be driven, or driven rollers may alternate with idler rolls. The web may be heated in the stretching zone, e.g. by hot air, hot liquid, heated plates or by heating the stretching rolls. The stretching zone may be preceded or followed by other treating zones. In Fig. 3, web 1 is conveyed by clip chains K<SP>1</SP> from inlet zone E, through a heating zone H, stretching zone R, heat fixation zone T, and cooling zone K to outlet zone A. The web in the zones preceding or following the stretching zone R may be subjected to additional longitudinal and/or transverse stretching.
Patent GB-704248-A (GB)
Title: Improvements in or relating to apparatus for indicating the quantity of liquid in a container
IPC: G01F23/18
Filed: 1950-11-15
Abstract: 704,248. Electric analogue calculating systems. COOK, P. F. Feb. 15, 1952 [Nov. 15, 1950], No. 27986/50. Class 37 [Also in Group XXXVIII]  Apparatus for measuring the quantity of fluid in the tanks of aircraft comprises a multiplication network (Fig. 6), wherein an input voltage Es energises a potentiometer 82 in series with a potentiometer 80 ; a potentiometer variable resistance 81 being connected across the input to the slider of potentiometer 82. Potentiometer 80 is graded in accordance with a law y = f (A) and varied by a shaft 83 while potentiometers 81 and 82 are respectively graded according to the laws y = f (B) and y = #2f(B), and ganged for variation by shaft 84. An output voltage Eo is developed on the slider of potentiometer 80 and it is shown that
Patent GB-1555970-A (GB)
Title: Convectorradiators
IPC: F28D1/02
Filed: 1976-07-06
Abstract: The heat-exchange unit (1) has a centrally arranged vertical plate part (2) which is delimited at the top and at the bottom by in each case a pipe (3, 4) for a heat-exchange medium. Extending upwards and downwards from the pipes (3, 4) are vertical ribs (7, 8), the outermost ribs of which form the side walls of the heat-exchange unit. The front and rear sides of the heat-exchange unit are closed off by covering plates (18, 19) and, in the plate part (2), at least one receptacle (13, 14), delimited by the side walls and the covering plates (18, 19,) for a fan (25, 26) is provided, which fan generates an air flow which passes over both the sides of the plate part (2). A more effective heat transmission is achieved by the air flow on both sides. <IMAGE>
Patent GB-1201717-A (GB)
Title: Methods of manufacture of semiconductor devices and semiconductor devices manufactured thereby
Inventor: WEAVING DEREK JOHN
IPC: H01L23/495
Filed: 1968-06-13
Abstract: 1,201,717. Semi-conductor devices. WESTINGHOUSE BRAKE & SIGNAL CO. Ltd. 19 May, 1969 [13 June, 1968], No. 28142/68. Heading H1K. A plurality of semi-conductor elements 3/5, 3/6 &c. are mounted between contact arms such as 3, 4, 5, 6 of two metal frets 1, 2 and are electrically connected to the respective arms, e.g. by soldering. The assembly is then encapsulated in insulating material and the arms 3-6 &c. are severed from the base portions 11, 12 of the frets 1, 2. The encapsulating material is then itself severed, e.g. along lines of weakness, to provide a plurality of completed devices. In the embodiment shown each device comprises a rectifier bridge including four PN- junction diodes 3/5, 3/6, 4/5, 4/6.
Patent GB-617287-A (GB)
Title: Improvements in or relating to high frequency heater arrangements
IPC: H05B6/48
Filed: 1946-09-19
Abstract: 617,287. Dielectric heating. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., and LAY, A. W. Sept. 19, 1946, No. 28152. [Class 39 (iii)] An arrangement for heating a material which changes its dielectric properties when heated, comprises a valve generator V1 with a resonant frequency determining network Cl, LI, C3 (i.e. tank circuit), and a load circuit L3, CL, coupled thereto having a resonant frequency differing from the tank circuit when the dielectric substance CL to be heated is cold, and which changes its resonant frequency as the heating proceeds to bring the load frequency into tune with the tank circuit. Preferably the load resonant frequency is arranged to be lower than the tank circuit when the substance to be heated is cold. A preferred arrangement comprises a two section 11 type network consisting of inductors L1, L3 and condensers C2, C3, grid leak bias being provided in usual manner by resister R1 and condenser C4. A variable condenser C5 is shunted across the load to enable the opetator to make initial adjustments to the load frequency.
Patent GB-1087508-A (GB)
Title: Production of vinyl acetate
Inventor: COPELIN HARRY BUGBIRD
IPC: C07C69/15
Filed: 1966-06-23
Abstract: Vinyl acetate is prepared by reacting ethylene with an acetic acid solution containing a palladium II salt and a cupric salt oxidizing agent. The reaction is under an ethylene pressure of at least 100 p.s.i.g. and the solution in its oxidized state contains potassium chloride at 0.05 to 2.6 moles/litre, a metal acetate providing acetate ions of at least 0.01 moles per litre and optionally water at a concentration of from 0 to 3% by weight. The process may be continuous in a one or two stages, and the vinyl acetate is recovered from the working solution and the reduced copper oxiized with air or oxygen, with a preferred oxygen partial pressure range of from 0.1 to 1 atmosphere. Palladium chloride, bumide, acetate, and the alkali metal chloro- or bromo-palladites are mentioned and cupric acetate is the preferred ionizable acetate.  Minor amounts of by-product acetaldehyde are obtained.
Patent GB-917771-A (GB)
Title: Improvements in or relating to apparatus for dispensing mixtures of two liquids
Inventor: WILSON FREDERICK EDWARD JOHN
IPC: G05D11/13
Filed: 1960-08-15
Abstract: 917,771. Fluid-pressure servomotor-control systems. AVERY-HARDOLL Ltd. Aug. 11, 1961 [Aug. 15, 1960; Oct. 26, 1960], Nos. 28234/60 and 36767/60. Class 135. Apparatus for dispensing a mixture of two liquids, such as petrol, in predetermined proportions comprises pumps 10, 11, Fig. 1, which deliver the liquids through flow-control valves 19, 21 and flowmeters 22, 23 to pipes 24, 25 leading to a common outlet nozzle. Each flowcontrol valve 19, 21, Fig. 3, comprises a valve closure member 49, loaded by a spring 56 towards its seat 48 and opened by the delivery from the pump acting on a surface 52, the delivery being admitted through ports (not shown) in the valve housing 47. The valve member 49 allows leakage to a control chamber 55 to allow liquid to act in a valve closing direction and the leakage from this chamber is controlled by a pilot valve formed by a hollow stem 67 co-operating with a piston member 62. The piston member 62 is loaded by a spring 64 and carries a mushroom head 59 which is smaller than the smallest end of a tapered sleeve 61 fixed to the valve member 49. When the flow through the valve reaches a predetermined value, the head 59 is moved against the spring 64 to move the piston 62 away from the stem 67 thus allowing more leakage from the chamber 55 and the valve 49 opens further, thus for a given position of the stem 67 the opening of the valve 49 depends on the flow through it, but this rate of flow depends on the position of the stem 67. By providing an adjustable path of entry to the chamber 55 the two flow-control valves may be matched. The positions of the stems 67 are adjusted by levers 43, Fig. 1. The speed of rotation of the flowmeters 22, 23 are fed through shafts 28, 35 and 29 to elements of a.differential gear 36, the sum of the speeds being transmitted through shaft 41 and bevel gears 39 to one element of the differential gear 37. A second element of the gear 37 is fed from shaft 28 through a change of speed gear-box 42 and the output of the gear 37 actuates the levers 43 to adjust the stems to maintain the required flow proportions set by the gear box 42. The gear-box is set by a knob 80 which also arranges that one or other of the electric motors 12, 13 driving the pumps is not actuated at two positions of the knob when a switch is actuated. The gearing may also actuate computers for total flow and cost.
Patent GB-646065-A (GB)
Title: Improvements in or relating to surgical operating instruments
IPC: A61B1/273
Filed: 1947-10-22
Abstract: 646,065. Surgical operating instruments. AMERICAN CYSTOSCOPE MAKERS, Inc. Oct. 22, 1947, No. 28239. Convention date, Sept. 9, 1939. '[Class 81(ii)] A surgical instrument comprises telescope and operating tubes, flexible at their forward portions, arranged side by side as a partly flexible unit, the operating tube having an outlet end adjacent the objective of the telescope, together with an electric lamp at the forward end of the instrument. As shown in Fig. 1 the instrument comprises a rigid rear portion 20 and a flexible forward portion 21; the flexible portions of the two tubes are formed of helical bands 25, 29, Fig. 10, of spring metal, which are joined to the rigid portions 24, 28, by means of connecting bushes 52, 53. The telescope tube 24, 25, is provided with a series of lenses spaced along its length and is electrically insulated from the rest of the instrument, forming a conductor for the lamp current which returns through the operating tube and the rear of the instrument. The tubes are enclosed by an outer sheath 57 of flexible material, e.g. rubber, at their forward portions and by a rigid insulating sheath 44 at their rear portions.
Patent GB-298232-A (GB)
Title: Improvements in or relating to electric switches
IPC: H01H15/02
Filed: 1928-10-02
Abstract: 298,232. Siemens - Schuchertwerke Akt.-Ges. Oct. 6, 1927, [Convention date]. Controlling consuming devices. - A switch for a lighting system in which a lamp may be turned on or off from more than one point comprises a sliding bar 1 carrying two pairs of conducting bridges, one pair arranged transversely and the other longitudinally. In the position shown in Fig. 3, the transversely-arranged spring-pressed plunger contacts 4, 5, bridge the fixed contacts 6, 7 and 9, 8 respectively. When the bar 1 is' moved into the position shown in Fig. 4, e.g. by means of a tumbler knob and spring mechanism, or by pushing, the longitudinally-arranged contacts 2, 3, which are pressed apart bv blade springs 12, bridge the fixed contacts 7, 8 and 6, 9 respectively. Fig. 6 shows the switch arranged between two ordinary two-way switches in a system for controlling a lamp 15. The lamp may be switched on or off from any of the three points.
Patent GB-428453-A (GB)
Title: Improvements in or relating to the production of steel tubes
IPC: B21B23/00
Filed: 1933-10-12
Abstract: 428,453. Making tubes. JONES, E. F., Brook House, Walbrook, London. Oct. 12, 1933, No. 28256. [Classes 83 (i), 83 (ii), and 83 (iv)] Squirting; skew-rolling; casting-moulds.-A hollow steel billet is cast in a mould about a core, and the core is removed and the billet is extruded before it has completely solidified, the extrusion plunger carrying an extension which passes through the hollow billet and the die. A billet is cast in a mould 14 adapted to form the container during the extrusion operation, and provided at the base with an extrusion die 33. A hollow billet may be cast by the process of Specification 381,790. When the billet has solidified only superficially, the mould is placed as extrusion container in a support 13 slidable on a bed 17, and including an upright portion 18 and a cylindrical member 32 into which the container enters. Extrusion is effected by a plunger 35 having a mandrel 34 integral therewith, the plunger being moved forward by a hydraulic ram 23 in the first part of the operation, and extrusion being completed by drawing the container, die, and support rearwardly by means of a second hydraulic ram connected by rods to the member 18. The die and support are preferably divided to facilitate removal of the parts from the machine. After extrusion the tube is coated with metal such as zinc, cadmium, or chromium by spraying, and then passes between four skew rolls 36 together forming a circular pass. A circumferentially toothed member 42 is driven through gearing 41 from an electric motor, and has bevel teeth 50 thereon which drive the rolls through gearing 49, 47, the support 37 for the rolls being so mounted that it also performs a rotary motion around the extruded tube. Cooling water may be circulated in passages in the shank 52. Specifications 167,915, [Class 83 (i)], and 358,379 are referred to.
Patent GB-483477-A (GB)
Title: Improvements in or relating to wringing machines
IPC: D06F45/22
Filed: 1936-10-19
Abstract: 483,477. Wringers. ACME WRING- ERS, Ltd., and BURT, J. W. Oct. 19, 1936, No. 28337. [Class 138 (ii)] A combined pressure-adjusting and carrying handle for a wringer comprises an inverted boatshaped handle member proper 31 which is connected by slotted links 3 to the pressure adjusting nut 5 or hand wheel operating a screw 6. The links are pivoted in recesses in the nut and the handle is normally positioned immediately adjacent the nut of which the reduced upper end 7 engages a socket 8 in the handle. When the wringer is to be transported the handle is raised sufficiently to permit the hand of the user to pass therearound above the pressure nut.
Patent GB-635793-A (GB)
Title: Improvements in or relating to tubular heat exchange apparatus
IPC: F28D7/16
Filed: 1947-10-23
Abstract: 635,793. Tubular heat-exchangers. HUET, A. Oct. 23, 1947, No. 28347. Convention date, Oct. 25, 1946. [Class 64(iii)] Relates to tubular heat-exchange apparatus in which a nest of tubes 2 housed within a casing 1 and extending between tube plates 3, 4 is traversed internally by one fluid, a second fluid circulating over the tubes generally in contra-flow to the' first fluid. The invention consists in have ing the tube plate 3 at that end of the casing where the external fluid leaves the apparatus inclined to the axes of the tubes, and in the provision at each end region of the casing of baffles 12, 13 to cause a portion of the external fluid entering at 7 and leaving at 8 to be directed over the ends of the tubes, thus eliminating the stagnant zones usually found near the ends of the casing. The flow of internal fluid through the tubes may be assisted by the provision of fluid deflecting devices 9, 10 on the tube plates and of fluid deflecting vanes 11 in the entry duct 5 as described in Specification 634,608.
Patent GB-319362-A (GB)
Title: Improvements in or relating to low-boiling hydrocarbon oils
IPC: C10L1/16
Filed: 1929-09-19
Abstract: 319,362. Standard Oil Development Co., (Assignees of Fischer, H. G. M., and Gustafson, C. E.). Sept. 21, 1928, [Convention date]. Motor spirit; mineral oils.-Gasolene, naphtha, cracked spirits, or other low-boiling non-viscous hydrocarbon oils have their gum-content reduced and their tendency to form gum and become acid prevented by addition of up to 1 gram per litre of an alpha-substituted aromatic compound with condensed nuclei which is able to combine with acids. In an example, 0.01-1.0 gram of a-naphthol, anaphthylamine, or phenyl a-naphthylamine, or of a mixture, e.g. of a-naphthol and a-naphthylamine, is dissolved in 1 litre of gasolene. The a-compound may be added as a solution, e.g. in naphtha or benzol. The gasolene should be neutral or slightly alkaline. Small proportions of metal carbonyls or metallo-organic substances may be added. Specifications 318,521 and 319,363 are referred to. The Specification as open to inspection under Sect. 91 (3) (a) describes the use of up to 5 grams per litre of an a substituted polycyclic aromatic hydrocarbon. This subject-matter does not appear in the Specification as accepted.
Patent GB-794561-A (GB)
Title: Improvements in or relating to prestressed concrete
IPC: E04C5/12
Filed: 1953-10-15
Abstract: 794,561. Prestressed concrete. BRAUNBOCK, E. Dec. 13, 1954 [Oct. 15, 1953; Oct. 19, 1953], Nos. 28485/53 and 28814/53. Class 20(4) The groups a of wires or rods of a prestressing cable A are anchored in cylindrical holes in an anchoring ring b by rivets or bolts c of cylindrical or (as shown) conical shape shot in or inserted between the wires or rods in such a way that the rivets or bolts after being driven in each surround a substantial portion of the circumferential surface of the wires or rods and secure them within the hole. The rivets or bolts may be of iron, steel, copper or a metal alloy and may have slight grooves to determine the position of the individual wires or rods of a group of wires or rods. As shown the cable A comprises ten groups each having four wires, spacing units B being provided along its length to keep the individual groups of wires separate. Spacing units B comprise spacing members e and d, the members d being in the form of bolts extending between plates g, small spacing members f are provided between the wires of each group as shown. An anchoring ring may be provided at one or both ends of the cable. In use the anchoring ring or rings b is or are located in a hole or holes provided in the end or ends of the structure to be prestressed. The anchoring ring or one of the anchoring rings is located between member C and G of a device for applying tension to. the cable. A threaded bar D connected to a hydraulic jack passes through the member G and is screwed into the member C. When the cable has been tensioned by the jack, the tension is transmitted to the structure by a nut K on the bar D bearing against a plate F, the space surrounding the anchoring ring is then filled up with grout and the bar D and the plate F are subsequently removed. In a modification the member G may be provided with holes and some of the groups of wires anchored thereto.
Patent GB-296719-A (GB)
Title: Electrical indicating instruments
IPC: G01R5/14
Filed: 1927-10-26
Abstract: 296,719. Weston Electrical Instrument Corporation, (Assignees of Weston, E. F.). Sept. 6, 1927, [Convention date]. Electromagnetic current and pressure meters; casings for, instruments; wire resistances, cored.- In instruments of the iron-vane type the moving system, pointer and scale are carried by a separate member which is secured to a base member carrying the windings; the windings are enclosed in a sealed chamber so as to avoid deposition of moisture on the glass. A voltmeter is shown in which the winding 42 and series resistances 46 are enclosed in a sealed chamber formed by two members 15, 16 held together by screws 20. The member 15 is formed with a chamber 23, of sector shape in cross-section, in which moves a thin aluminium damper 29 secured to the shaft 27 and carrying an iron vane 28 which is repelled by a fixed iron plate (not shown) secured to the radial wall of the chamber 23. The field coil 42 is of sector shape and passes over the chamber 23 with clearance. Connected to a pair of flat metal straps 45 bent up at their forward ends and apertured to pass over bolts 51 which support a pair of resistance coils 46, of which only one is shown. Each of these is wound on a bobbin comprising an insulating tube 47 with metal end plates 48 secured by points embedded in the tube 47. Each plate 48 is connected to one end of the resistance winding and is provided with an apertured extension 50 forming a terminal. The extensions 50 at the front ends of the bobbins are passed over the bolts 51 so as to be connected to the terminals 45 of the winding 42, the rear extensions 50 being secured to the inner ends of the instrument terminals 54. Specification 297,093 is referred to.
Patent GB-340248-A (GB)
Title: Improvements in or relating to measuring motions employed in the winding of textile threads
IPC: B65H61/00
Filed: 1929-09-21
Abstract: 340,248. Measuring stop-motion for thread-winding machines. HETHERINGTON & SONS, Ltd., J. and CHANDLER, A. R., Vulcan Works, Pollard Street, Manchester. Sept. 21, 1929, No. 28637. [Classes 120 (ii) and 120 (iii).] In a winding machine for threads a measuring device actuating a stop-rod 8, Figs. 3 and 4, comprises a spring-controlled trip finger 14 positively clutchable to a winding mechanism by manual setting-on movement of the stop-rod 8, a detent 19 being placed at a fixed point in the path of the trip finger 14 and releasable thereby, the trip finger being automatically de-clutched on the knock-off movement of the stop-rod 8 effected by release of the detent. A measuring wheel rotates, through worm gearing, a clutch half 10 having a boss 11 to which is screwed an indicating finger 29, the boss also carrying a finger 14 which at the end of the winding engages the arm 17 of the detent lever 17,18, 19, pivoted at 16, thereby moving the arm 18 against the pressure of a spring 21, and releasing the stop-rod 8, allowing it to move upwards under spring pressure and stop the winding. A bevelled edge of the stop-rod 8 engages bevelled edges 24 of a clutch fork 12 pivoted at 22 and embracing a reduced part of the boss 11, thus as the stop-rod 8 moves upwards the clutch fork is moved by a spring 13 to disengage the boss 11 which is thereupon rotated by a spiral spring 26 until the finger 14 encounters a stop which is adjustable by rotating the dial 28 in its casing, the amount of adjustment being limited by a stop such as a screw 36, engaging a pawl arm 32 the pawl of which engages notches in the dial casing corresponding to desired lengths to be wound and may be held in engagement by a screw 33. To restart the machine the stop-rod 8 is depressed, and caught by the detent 19, and its bevelled edge moves the fork 12 for reclutching the boss 11 &c. The dial 28 &c. may be protected by a glass 37. According to the Provisional Specification the dial and casing may be fixed and the clutch detent may have a slotted arcuate prolongation bearing an adjustable stop.
Patent GB-277527-A (GB)
Title: Improvements in or relating to umbrellas and sunshades
IPC: A45B25/12
Filed: 1926-11-15
Abstract: 277,527. Drury, H. N. Nov. 15, 1926. Holding closed.-In a device for holding umbrellas, &c. closed of the kind comprising a sliding sleeve which engages the tips of the ribs and is provided with spiral slots engaging fixed pins on the stick, the slots are provided with offset extensions at their ends. In the form shown, the sleeve a slides with the handle b on the stick e, the slots h having the extensions m. In another form, the sleeve slides on the handle which is fixed to the stick.